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malfutka [58]
3 years ago
10

Why are graphs helpful for displaying data?

Physics
2 answers:
Fed [463]3 years ago
8 0

Answer:

They help you see trends in the data.

3241004551 [841]3 years ago
6 0
C is the answer i think
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Apparent brightness depends on which two properties?
Serjik [45]

Answer:

I believe it is luminosity and distance

Explanation:

So B

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2 years ago
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A speaker is designed for wide dispersion for a high frequency sound. What should the diameter of the circular opening be for a
andriy [413]

To solve this problem we will apply the concepts related to wavelength, as well as Rayleigh's Criterion or Optical resolution, the optical limit due to diffraction can be calculated empirically from the following relationship,

sin\theta = 1.22\frac{\lambda}{d}

Here,

\lambda = Wavelength

d= Diameter of aperture

\theta = Angular resolution or diffraction angle

Our values are given as,

\theta = 11\°

The frequency of the sound is f = 9100 Hz

The speed of the sound is v = 343 m/s

The wavelength of the sound is

\lambda = \frac{v}{f}

Here,

v = Velocity of the wave

f = Frequency

Replacing,

\lambda = \frac{(343 m/s)}{(9100 Hz)}

\lambda = 0.0377 m

The diffraction condition is then,

sin\theta = 1.22\frac{\lambda}{d}

Replacing,

sin(11\°) = 1.22\frac{(0.0377 m)}{(d)}

d = 0.24 m

Therefore the diameter should be 0.24m

6 0
3 years ago
If the same quantity of heat is added to both a 2-liter and a 4-liter container of water, the temperature change for water in th
VikaD [51]

Answer:

brainly.com/question/10966794

Explanation:

3 0
2 years ago
How to change 0.000 007 8 s to us?
Greeley [361]

 

The letter u before any unit means micro. Micro is a unit prefix used in the metric system which actually means a factor of 10^-6 (one millionth).

Now, 10^-6 is equivalent to a movement of 6 decimal places from left to right. So to write the number 0.0000078 s into a number which has a unit of us, therefore we move the decimal place by 6 to the right, giving us:

7.8 us

 

Another way to do this is to multiply the number by 1 million (1,000,000), so:

0.0000078 * 1,000,000

Using the calculator to solve, we get the value:

7.8 us

8 0
3 years ago
2. An 85.5 kg astronaut is training for accelerations that he will experience upon reentry. He is placed in a centrifuge (r = 12
icang [17]

Answer Expert Verified

Hello here is your answer and also please mark me as brainlest

Since one revolution around a circle is 2 pi radian; hence 1 rpm equals 2 pi radians per minute. And because a minute has 60 seconds, 1 rpm equals 1/60 revolution per second. Therefore, we have 2 pie/60 * 15.3 = 0.2513 rps. The linear velocity v = wr where w is the angular velocity in rad/s and r is the distance. So we have 0.2513 * 10.0 = 2.513 rad/s The centripetal acceleration is given by a = w^2 r = (2.513)^2 * 10 = 63.15 rad/s2 The centripetal force F = mass * centripetal acc = 75 * 63.15 = 4736.25 N The torque = centripetal force * distance = 4736 * 63.15 = 299078.4 Nm Two forces acts on the astronaut. The normal force and acceleration due to gravity.

I hope this help you

brainlest

8 0
2 years ago
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